Photoluminescence spectra in GaAs biconical quantum dot

S. P. Gavalajyan

doi:10.1117/12.3016254

10 June 2024 Photoluminescence spectra in GaAs biconical quantum dot

S. P. Gavalajyan

Proceedings Volume 12991, Nanophotonics X; 129910X (2024) https://doi.org/10.1117/12.3016254
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Conference Poster

Abstract

Quantum Dots (QDs), renowned for their unique electronic and optical properties, are finding innovative applications in areas such as bioimaging, quantum computing, and light-emitting diodes. This study focuses on biconical (QD), which offer enhanced control over charge carrier confinement, leading to greater tunability of their electronic and optical properties. Utilizing numerical discretization within the effective-mass approximation, the research accurately calculates excitonic properties in these complex systems, particularly in GaAs biconical QDs. Additionally, the photoluminescence properties of these biconical QDs show promise as tunable light sources, with the added benefit of electric field influence for photoluminescence. The research also explores the energy dependence on bicone geometry, highlighting energy coincidence as the two cones' heights match. Photoluminescence investigations, conducted on biconical QDs of varying sizes under different electric field conditions, confirm the expected red and blue shifts based on the field direction. In conclusion, this study establishes a theoretical foundation for manipulating the properties of biconical QDs, opening avenues for their application in optoelectronic devices. The ability to control photoluminescence shifts through electric field direction underscores the practical significance of this research.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

S. P. Gavalajyan "Photoluminescence spectra in GaAs biconical quantum dot", Proc. SPIE 12991, Nanophotonics X, 129910X (10 June 2024); https://doi.org/10.1117/12.3016254

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